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Ehlers, Georg; Mamontov, Eugene; Zamponi, Michaela M.; Gardner, Jason S.
Oak Ridge National Laboratory (United States); Spallation Neutron Source (United States). Funding organisation: SC USDOE - Office of Science (United States)2010
Oak Ridge National Laboratory (United States); Spallation Neutron Source (United States). Funding organisation: SC USDOE - Office of Science (United States)2010
AbstractAbstract
[en] The high flux and low background of the new backscattering spectrometer at the SNS combine to produce an excellent signal to noise ratio, allowing us to investigate a low lying weak excitation never seen before in the spin ice, Ho2Ti2O7. This non-dispersive excitation has been observed at E = 26.3 μeV below 100 K but is resolution limited only below ∼65 K. It is indifferent to magnetic fields below μ0H = 4.5 T, at 1.6 K. These characteristics help us to identify the excitation as due to the nuclear spin system.
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1 Dec 2010; 4 p; ICNS 2009: International Conference on Neutron Scattering; Knoxville, TN (United States); 2 May 2009; KC0402010; ERKCSNX; AC05-00OR22725; Available from IOP Publishing, 76 Portland Place, London (GB); Journal of Physics: Conference Series, Volume 251, Paper 012003 (2010)
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